Improved Multisignature Scheme for Authenticity of Digital Document in Digital Forensics Using Edward-Curve Digital Signature Algorithm

Algorithm 3

Signature verification.

	Input: Signed Document, Digital Signature,
	Public Keys of Signatories
	Result: Verification Results
	Notations;
	EdDSApub ← EdDSA public-key
	EdDSAPub ← EdDSA combined public-key
	Doc ← Signed document
	EdDSASignature ← EdDSA Signature
	Initialization;
	EdDSApub1 ▷Public key of user 1.
	EdDSApub2 ▷Public key of user 2.
	.
	.
	EdDSApubn ▷Public key of user n.
	EdDSAPub = EdDSApub1 EdDSApun2……. EdDSApubn
	Digital Signature Verification;
	EdDSAverif = Verify (Doc, EdDSAPub, EdDSASig)
	if EdDSAverif == 1 then
	Signature verified Successfully;
	else
	Verification is Failed;
	end